Currently we are using windows-2025-vs2026 which is no longer in public beta:

The images have passed the beta stage.

windows-2025 will use Windows Server 2025 with Visual Studio 2026 image in June 2026:

This change will be rolled out over a week beginning June 8, 2026 and will complete by June 15, 2026.

So some time after the rollout we should switch, but no rush, yet.

Linked PRs

• GH-150605: use windows-2025 in GitHub Actions #150606
• [3.15] GH-150605: use windows-2025 in GitHub Actions (GH-150606) #151939